Car-underframe.



0. s. PULLIAM.

GAR UNDERFRAME. APPLICATION FILED 001126, 191i).

WITNESSES.

eim

OSWALD S. PULLIAM, OF PITTSBURGH, PENNSYLVANIA.

CAR-UNDERFRAME.

Specification of Letters Patent.

Patented (Dot. e, rare.

Application filed October 26, 1910. Serial No. 589,133.

To all whom it may concern:

Be it known that I, OSWALD S. PULLIAM, a resident of Pittsburgh, in thecounty of Allegheny and State of Pennsylvania, have invented certain newand useful Improvements in Car-Underframes, of which the following is aspecification.

An object of my invention is to provide a new and improved metallicunderframe for cars comprising a structure preferably constituting caststeel end-portions, a separable middle portion joining the inner ends ofthe end-portions and separable side-members extending from oneend-portion to the other end-portion and secured thereto, saidlongitudinally extending side members constituting the side-sills of theunderframe and preferably consisting of rolled metal members.

A further object of the present invention is to provide an underframe ofcantaliver construction comprising two end-portions each formed with acenter-bearing and constituting when mounted on a truck a substantiallybalanced structure, said substantially balanced end-portions being tiedtogether by a middle portion, and. separable side-sills extending fromone end-portion to the other and acting as anchors for the cantaliveredends. i

In the accompanying drawing, which illustrates applications of myinvention Figure 1 is a perspective view of an underframe constructed inaccordance with my invention, Fig. 2, a similar view of a modified formof my invention; Fig. 3, a longitudinal sectional view taken on lineIII-III of Fig. 1; Fig. 4, a cross section taken on line IV-IV of Fig.1; Fig. 5, a longitudinal section taken on line VV of Fig. 2; and

Fig. 6, a perspective view of a portion of an underframe for passengercars embodying my invention.-

Referring to the drawing, and first to the form of my inventionillustrated by Fig. 1, 2 designates the end-portions of an underframeand as shown, each comprises an integral platform-like structure havinga center-bearing 3 and a bolster 4. In addition to these members eachportion 2 is formed with longitudinally extending members 5. Theend-portions are'designed to v be mounted on a car-truck, and when somounted constitute substantially balanced structures, said balanced endsbeing tied together by a middle or connecting member or portion6. Asparticularly shown by Fig. 3, the inner ends of the end-portions 2 areconnected with the respective ends of the portion 6 by being rivetedthereto as shown by the numeral 7.

Extending along the sides of the portions 2 and 6 and secured thereto bymeans of rivets or by other suitable means, I provide separableside-members or members 8 constituting the side-sills of the underframe.Members 8 are preferably rolled steel members of channel form into whichthe reduced sides of portions 2 and 6 enter.

The form of Fig. 2 shows the end-portions 2 and the portion 6* inskeleton form with,

the separable side-sills 8 secured thereto. This form of my inventioncomprises members corresponding with the members of the form of Fig. 1,that is, center-bearing 3", bolster 4 and longitudinally extendingmembers 5 In the form of Fig. 6, I have shown a construction embodyingmy invention particularly designed for passenger cars in which therespective end-portions 2 are formed with a platform extension 10. Inthis form the end-portions 2 are connected by a middle portion 6 andmembers 8", represent the side-sill members of the underframe.

What I claim is An under-frame for cars comprising in a cantaliverconstruction two integral metallic end-portions each constituting a substantially balanced structure and including a body-bolster formed with acenter bearing, an end-sill, said bolster and end-sill formed withreduced ends, a connecting middleportion comprising a tranverse memberformed with reduced ends, and a pair of continuous separableside-members of channel form constituting the side-sills of theunderframe with the reduced ends of the transverse'members entered inand secured to the side-members, said side-members extending fromend-sill to end-sill.

In testimony whereof I afiix my signature in presence of two witnesses.

OSWALD s. Penman. 7

Witnesses:

W. G. Doom'r'rrn,

Gsrrmm.

